array_slice(3) [php man page]

ARRAY_SLICE(3)								 1							    ARRAY_SLICE(3)

array_slice - Extract a slice of the array

SYNOPSIS

       array array_slice NULL (array  $array, int  $offset, [int  $length], [bool  $preserve_keys = false])

DESCRIPTION

       array_slice(3) returns the sequence of elements from the array $array as specified by the $offset and $length parameters.

PARAMETERS

	      o $array
		- The input array.

	      o $offset
		-  If  $offset	is  non-negative,  the sequence will start at that offset in the $array. If $offset is negative, the sequence will
		start that far from the end of the $array.

	      o $length
		- If $length is given and is positive, then the sequence will have up to that many elements in it. If the array  is  shorter  than
		the  $length,  then  only the available array elements will be present. If $length is given and is negative then the sequence will
		stop that many elements from the end of the array. If it is omitted, then the sequence will have everything from $offset up  until
		the end of the $array.

	      o $preserve_keys
		-  Note  that array_slice(3) will reorder and reset the numeric array indices by default. You can change this behaviour by setting
		$preserve_keys to TRUE.

RETURN VALUES

	Returns the slice.

CHANGELOG

       +--------+---------------------------------------------------+
       |Version |						    |
       |	|						    |
       |	|		     Description		    |
       |	|						    |
       +--------+---------------------------------------------------+
       | 5.2.4	|						    |
       |	|						    |
       |	|  The default value of the $length  parameter	was |
       |	| changed  to  NULL.  A  NULL$length  now tells the |
       |	| function to use the length of  $array.  Prior  to |
       |	| this	version,  a NULL$length was taken to mean a |
       |	| zero length (nothing will be returned).	    |
       |	|						    |
       | 5.0.2	|						    |
       |	|						    |
       |	|  The optional $preserve_keys parameter was added. |
       |	|						    |
       +--------+---------------------------------------------------+
EXAMPLES

       Example #1

	      array_slice(3) examples

	      <?php
	      $input = array("a", "b", "c", "d", "e");

	      $output = array_slice($input, 2);      // returns "c", "d", and "e"
	      $output = array_slice($input, -2, 1);  // returns "d"
	      $output = array_slice($input, 0, 3);   // returns "a", "b", and "c"

	      // note the differences in the array keys
	      print_r(array_slice($input, 2, -1));
	      print_r(array_slice($input, 2, -1, true));
	      ?>

	      The above example will output:

	      Array
	      (
		  [0] => c
		  [1] => d
	      )
	      Array
	      (
		  [2] => c
		  [3] => d
	      )

SEE ALSO

       array_splice(3), unset(3), array_chunk(3).

PHP Documentation Group 													    ARRAY_SLICE(3)

EXPLODE(3)								 1								EXPLODE(3)

explode - Split a string by string

SYNOPSIS

       array explode (string  $delimiter, string  $string, [int  $limit])

DESCRIPTION

	Returns an array of strings, each of which is a substring of $string formed by splitting it on boundaries formed by the string $delimiter.

PARAMETERS

	      o $delimiter
		- The boundary string.

	      o $string
		- The input string.

	      o $limit
		- If $limit is set and positive, the returned array will contain a maximum of $limit elements with the last element containing the
		rest of $string.  If the $limit parameter is negative, all components except the last -$limit are returned.  If the $limit parame-
		ter is zero, then this is treated as 1.

       Note

	       Although implode(3) can, for historical reasons, accept its parameters in either order, explode(3) cannot. You must ensure that the
	      $delimiter argument comes before the $string argument.

RETURN VALUES

	Returns an array of strings created by splitting the $string parameter on boundaries formed by the $delimiter.

	If $delimiter is an empty string (""), explode(3) will return FALSE. If $delimiter contains a value that is not contained in $string and a
       negative $limit is used, then an empty array will be returned, otherwise an array containing $string will be returned.

CHANGELOG

       +--------+-----------------------------------------+
       |Version |					  |
       |	|					  |
       |	|		Description		  |
       |	|					  |
       +--------+-----------------------------------------+
       | 5.1.0	|					  |
       |	|					  |
       |	|  Support for negative $limits was added |
       |	|					  |
       +--------+-----------------------------------------+
EXAMPLES

       Example #1

	      explode(3) examples

	      <?php
	      // Example 1
	      $pizza  = "piece1 piece2 piece3 piece4 piece5 piece6";
	      $pieces = explode(" ", $pizza);
	      echo $pieces[0]; // piece1
	      echo $pieces[1]; // piece2

	      // Example 2
	      $data = "foo:*:1023:1000::/home/foo:/bin/sh";
	      list($user, $pass, $uid, $gid, $gecos, $home, $shell) = explode(":", $data);
	      echo $user; // foo
	      echo $pass; // *

	      ?>

       Example #2

	      explode(3) return examples

	      <?php
	      /*
		 A string that doesn't contain the delimiter will simply
		 return a one-length array of the original string.
	      */
	      $input1 = "hello";
	      $input2 = "hello,there";
	      var_dump( explode( ',', $input1 ) );
	      var_dump( explode( ',', $input2 ) );

	      ?>

	      The above example will output:

	      array(1)
	      (
		  [0] => string(5) "hello"
	      )
	      array(2)
	      (
		  [0] => string(5) "hello"
		  [1] => string(5) "there"
	      )

       Example #3

	      $limit parameter examples

	      <?php
	      $str = 'one|two|three|four';

	      // positive limit
	      print_r(explode('|', $str, 2));

	      // negative limit (since PHP 5.1)
	      print_r(explode('|', $str, -1));
	      ?>

	      The above example will output:

	      Array
	      (
		  [0] => one
		  [1] => two|three|four
	      )
	      Array
	      (
		  [0] => one
		  [1] => two
		  [2] => three
	      )

NOTES

       Note

	      This function is binary-safe.

SEE ALSO

       preg_split(3), str_split(3), mb_split(3), str_word_count(3), strtok(3), implode(3).

PHP Documentation Group 														EXPLODE(3)